Is my ApoB (Apolipoprotein B) normal?
Free blood test checker · Standard + longevity-optimal ranges
What is a normal ApoB level?
ApoB measures the total number of atherogenic (artery-clogging) particles in your blood. Each LDL, VLDL, and Lp(a) particle carries one ApoB molecule. It's considered a superior predictor of heart disease compared to LDL-C alone because it counts particles, not just cholesterol content. Target: below 90 mg/dL standard, below 80 mg/dL for longevity.
| Range | Values |
|---|---|
| Standard Reference | 0–90 mg/dL |
| Optimal | 0–80 mg/dL |
| Longevity Optimal | < 80 mg/dL |
| High Risk | > 120 mg/dL |
What causes abnormal ApoB levels?
Elevated ApoB is caused by the same factors that raise LDL: high saturated fat diet, genetic predisposition (familial hypercholesterolemia), obesity, insulin resistance, hypothyroidism, and chronic kidney disease. ApoB can be high even when LDL-C appears normal — this is called "discordance" and means you have many small, dense LDL particles.
When should you see a doctor?
See your doctor if ApoB is above 90 mg/dL, especially if you have a family history of premature heart disease. If ApoB is above 120 mg/dL, discuss aggressive lipid-lowering therapy. ApoB testing is particularly important if your LDL and triglycerides are discordant or if you have metabolic syndrome.
Where to get a ApoB test
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Related biomarkers
These biomarkers are often tested alongside ApoB for a more complete picture.
Frequently asked questions
What is a normal ApoB level?
Is ApoB more important than LDL?
How do I get an ApoB test?
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Sources: Reference ranges based on AHA/ACC, ADA, and AACE clinical guidelines. Biological variation data from Ricos/Westgard database. Longevity-optimal ranges reflect targets used by preventive and functional medicine practitioners.
Last reviewed: April 2026. This tool provides general health information and is not a substitute for professional medical advice, diagnosis, or treatment. Always consult your healthcare provider about your specific results.